“…Lastly the pooled odds of work related injury among those workers using PPE was 52% less than those who did not use PPE at work place (0.48 (95%CI: 0.36, 0.65)). To calculate the pooled odds ratio of alcohol drinking habit (9,11,17,18,26,28,30,31), cigarette smoking habit (18,24,26,30,31), khat chewing habit (9, 22, 26-28, 30, 31), work related stress (9,20,26,29,30), level of education (9,11,18,24,26,30,31), and use of PPE (9,11,18,19,22,26,27,(29)(30)(31) reports of a minimum of 5 to 10 studies were included.…”